<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Carson_Ho</title>

    <script>
       function callJS(){
          alert("Android调用了JS的callJS方法");
       }

       function callJsWithParm(String txt){
           return txt + "Wellcome to shen zhen !";
       }
    </script>
</head>


<body>
   <button onclick="callJS()">点击这里</button>

</body>


</html>